Purdue's entry in the Rube Goldberg contest

This year's Rube Goldberg contest requires that the team build a device to remove the old batteries and insert new batteries in 20 or more steps.

The winning team, from Purdue took 125 steps.

A Quicktime video of their machine can be found here.  The /. article for this didn't have the full movie, but Valorie forwarded it from the Destination Imagination mailing list.

Edit: Fixed spelling